【摘要】 选取纯Ni箔作过渡层,采用真空热压扩散工艺,在加热温度480℃、压力10 MPa、真空度1.0×10-2Pa的工艺条件下,制备了变形铝合金2024和不锈钢0Cr18Ni9Ti双金属复合材料.利用扫描电子显微镜、能谱仪、X射线衍射仪和显微硬度仪等测试分析方法,对双金属复合材料的2个连接界面及基体进行了组织、性能分析.结果表明:不锈钢/纯Ni界面形成了宽约8μm的互扩散区,但其过渡区无金属间化合物生成;Al/Ni界面生成了宽约4μm的扩散过渡区,过渡区的相组成为金属间化合物Al3Ni2、Al3Ni及Al3Ni5.更多还原

【Abstract】 Choosing pure nickel foil as the transition layer,Al/0Cr18Ni9Ti bimetallic composite is prepared with the vacuum warm compaction diffusion method under the condition of 480 ℃ compaction temperature,10 MPa pressure and 1.0×10-2 Pa vacuum.The structures and performances of the two bimetallic composite bonding interfaces and matrix are analyzed respectively with scanning electron microscope,X-ray diffractometer and Vickers microhardness scale.It is found that under the condition of diffusion bonding,three kinds of intermetallic compounds,Al3Ni2,Al3Ni and Al3Ni5,form in the Al/Ni interface less than 4 μm in thickness;and no intermetallic compound forms in the Ni/0Cr18Ni9Ti diffusion zone with about 8 μm in thickness.更多还原